Beam column joint steel bar arrangement structure

Abstract

The utility model relates to the technical field of beam column construction, and discloses a beam column node steel bar arrangement structure, a beam column comprises built-in profile steel, the profile steel comprises a web plate with a cross-shaped section, each outer end of the web plate is connected with a flange plate, a plurality of beam column longitudinal bars are arranged outside the profile steel to form a cube in a surrounding mode, and the beam column longitudinal bars are arranged in the cube. Beam column transverse bars are arranged in the beam column longitudinal bars, and stirrups are arranged outside the beam column longitudinal bars. The frame beam comprises a frame beam main reinforcement which is transversely arranged, the frame beam main reinforcement is connected with the beam column through a connecting device, the connecting devices such as a sleeve, a reinforcement penetrating hole, a connecting plate, an axilla part and a reinforcing steel bar are arranged according to different connecting conditions of the frame beam main reinforcement and the beam column, and the frame beam main reinforcement is accurately positioned. The whole structure forms an integral stress system, the force transmission path between the frame beam and the beam column is optimized, the rigidity and the bearing capacity of the beam column joint steel bar arrangement structure are improved, and the problem that various anchoring modes of the frame beam main bars and the beam column are insufficient is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to beam column construction technical field, concretely is a kind of beam column joint reinforcement arrangement structure. BACKGROUND

[0002] In the overhead layer of subway parking lot, the connecting joint of beam column and frame beam bears various loads including static load, dynamic load and occasional load, and is an important part of structure force transmission, and the design and construction of joint directly affect the stability and durability of the whole overhead layer structure. Because beam reinforcement and column reinforcement are densely arranged in longitudinal and transverse directions at the joint, and the space occupied by profile steel column at the joint is large, the distance between steel bars is small or they collide with each other, and the operation space is small, so the steel bar arrangement is complex and the construction is difficult. The following problems occur during construction:

[0003] (1) The main reinforcement of part of the frame beam and the flange plate of the beam column cannot meet the anchoring requirements;

[0004] (2) The main reinforcement of part of the frame beam and the web plate of the beam column cannot meet the anchoring requirements;

[0005] (3) The length of the main reinforcement of part of the frame beam cannot meet the anchoring requirements;

[0006] (4) When the main reinforcement of part of the frame beam is inserted on both sides of the flange plate of the beam column, it cannot meet the anchoring requirements;

[0007] (5) The main reinforcement of part of the frame beam cannot be inserted in the flange plate of the beam column, and cannot meet the anchoring requirements. CONTENT OF THE UTILITY MODEL

[0008] The utility model aims to provide a kind of beam column joint reinforcement arrangement structure to solve the problem that the main reinforcement of part of the frame beam and the flange plate of the beam column cannot meet the anchoring requirements in the connecting joint of the existing beam column and frame beam.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0010] A kind of beam column joint reinforcement arrangement structure, comprising a beam column and a plurality of frame beams crossing the beam column from different directions, the beam column comprises a built-in profile steel, the profile steel comprises a web plate with a cross-shaped cross section, each outer end of the web plate is connected to a flange plate, the profile steel is provided with a plurality of beam column longitudinal reinforcement surrounding a cube, a plurality of beam column transverse reinforcement is arranged inside the beam column longitudinal reinforcement, and stirrups are arranged outside the beam column transverse reinforcement;The frame beam comprises a horizontally arranged frame beam main reinforcement, and the frame beam main reinforcement is connected to the beam column by a connecting device.

[0011] Preferably, the connecting device is a sleeve, the sleeve penetrates the flange plate, and the sleeve arrangement is the same as the frame beam main reinforcement.

[0012] Further, the sleeve is internally threaded, the frame beam main reinforcement is arranged in the sleeve, and the frame beam main reinforcement is tack-welded at the contact point with the beam column cross reinforcement.

[0013] Further, the frame beam main reinforcement is bent after penetrating the sleeve, the bending angle is 90-135 degrees, and the bending diameter D of the frame beam main reinforcement is greater than or equal to 5 times the diameter d of the reinforcement.

[0014] Preferably, the connecting device is a reinforcement hole arranged on the web plate, the reinforcement hole is arranged in the same way as the frame beam main reinforcement, and the diameter of the reinforcement hole is the diameter of the frame beam main reinforcement plus 3-5 mm.

[0015] Preferably, the connecting device is a connecting plate arranged horizontally on the flange plate of the profile steel, and the frame beam main reinforcement is welded on the connecting plate.

[0016] Preferably, the connecting device is a haunch arranged on both sides of the flange plate, the haunch has a width of 200-300 mm, the haunch is provided with a reinforcing bar, and the reinforcing bar is the same as the frame beam main reinforcement in number and direction.

[0017] Further, the frame beam main reinforcement is welded to the reinforcing bar in the haunch.

[0018] Preferably, the connecting device is a reinforcing bar, the frame beam main reinforcement is inserted into the stirrup of the beam column, the inserted end is cut off outside the flange plate and then bent, and the reinforcing bar is welded on the flat section of the frame beam main reinforcement from the stirrup to the flange plate.

[0019] Further, at the position where the beam column edge is greater than or equal to 500 mm and greater than or equal to 1 / 2 of the height of the frame beam, a separation mesh is arranged along a 45-degree inclined surface from the top surface of the frame beam to the bottom surface of the frame beam.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The connecting device of the beam column and the frame beam main reinforcement is arranged as a sleeve on the flange plate, the position of the frame beam main reinforcement can be more accurately positioned, the internal thread of the sleeve, the bending of the frame beam main reinforcement after penetrating the sleeve, and the tack-welding of the frame beam main reinforcement and the beam column cross reinforcement together strengthen the anchoring of the frame beam main reinforcement, and the problem that part of the frame beam main reinforcement type and the beam column flange plate cannot meet the anchoring requirement is solved.

[0022] The connecting device is arranged as a reinforcement hole on the web plate, the frame beam main reinforcement and the beam column are connected through the reinforcement hole on the web plate, a whole stress system can be formed, the overall rigidity of the structure is improved, and the problem that part of the frame beam main reinforcement and the beam column web plate cannot meet the anchoring requirement is solved.

[0023] The connecting device is arranged as a connecting plate on the flange plate, and the connecting plate can uniformly transmit the stress of the frame beam main reinforcement to the beam column as an intermediate medium, thereby optimizing the force transmission path and solving the problem that the length of the frame beam main reinforcement cannot meet the anchoring requirement;

[0024] The connecting device is arranged as an armpit on both sides of the flange plate, the armpit increases the node domain width of the core area of the beam column, improves the bearing capacity of the region, the frame beam main reinforcement is inserted into the armpit and connected with the reinforcing steel bar, and the problem that the frame beam main reinforcement cannot meet the anchoring requirement when being inserted on both sides of the flange plate of the beam column is solved.

[0025] The connecting device is arranged as a reinforcing steel bar, the flange plate is cut off and bent outside after the frame beam main reinforcement is inserted into the stirrup, and then the reinforcing steel bar is welded, so that the frame beam main reinforcements are formed as a force whole, the stability of anchoring is strengthened, and the problem that the frame beam main reinforcement cannot meet the anchoring requirement when having no position to be inserted into the flange plate of the beam column is solved.

[0026] The isolation mesh is arranged between the beam column and the frame beam, and blocks the mixing of concrete of different strength grades during pouring, so that the high-strength concrete cannot be diluted by the low-strength concrete, and the stability of the beam column and the frame beam structure is ensured.

[0027] In summary, the connecting device such as the sleeve, the reinforcing hole, the connecting plate, the armpit and the reinforcing steel bar is arranged according to different connection conditions of the frame beam main reinforcement and the beam column, the frame beam main reinforcement is accurately positioned, the whole structure forms a whole force system, the force transmission path between the frame beam and the beam column is optimized, the rigidity and the bearing capacity of the beam column node steel bar arrangement structure are improved, and the various anchoring problems of the frame beam main reinforcement and the beam column are solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 is a schematic diagram of the whole structure of the beam column node of the utility model;

[0029] Figure 2 Fig. 3 is a schematic diagram of the three-dimensional structure of the sleeve of the utility model;

[0030] Figure 3 Fig. 4 is a sectional view of the sleeve of the utility model;

[0031] Figure 4 Fig. 5 is a schematic diagram of the three-dimensional structure of the connecting plate of the utility model;

[0032] Figure 5 Fig. 6 is a schematic diagram of the structure of the anti-floating plate of the utility model;

[0033] In the diagram: 100-beam-column, 110-steel section, 111-flange plate, 1111-sleeve, 1112-haunch, 1113-connecting plate, 120-longitudinal reinforcement of beam-column, 130-transverse reinforcement of beam-column, 140-stirrup, 200-frame beam, 210-main reinforcement of frame beam, 220-isolation mesh. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figure 1 As shown, a beam-column joint reinforcement arrangement structure includes a beam-column 100 and multiple frame beams 200 that traverse the beam-column 100 from different directions. The beam-column 100 includes an internal steel section 110, which includes a web with a cross-shaped cross section. Each outer end of the web is connected to a flange plate 111. The steel section 110 is surrounded by a plurality of longitudinal beam-column reinforcements 120 forming a cube. The longitudinal beam-column reinforcements 120 are provided with transverse beam-column reinforcements 130 inside, and are surrounded by stirrups 140. The frame beams 200 include transversely arranged main frame beam reinforcements 210, which are connected to the beam-column 100 by a connecting device.

[0036] like Figure 2 As shown, in the first embodiment of this utility model: the connecting device is a sleeve 1111, the sleeve 1111 passes through the flange plate 111, and the arrangement of the sleeve 1111 is the same as that of the main reinforcement 210 of the frame beam.

[0037] During actual construction, the sleeve 1111 is provided with internal threads, and the main reinforcement 210 of the frame beam passes through the sleeve 1111. Due to deviations in processing and installation accuracy, the longitudinal reinforcement of the beam cannot be matched and connected with the sleeve 1111 at the flange of the beam-column 100. The contact point between the main reinforcement 210 of the frame beam and the transverse reinforcement 130 of the beam-column can be welded.

[0038] like Figure 3 As shown, the main reinforcement bar 210 of the frame beam is bent after passing through the sleeve 1111, with a bending angle of 90° to 135°, and the bending diameter D of the main reinforcement bar 210 of the frame beam is greater than or equal to 5 times its steel bar diameter d.

[0039] The second embodiment of the utility model: the connecting device is a muscle hole, the muscle hole is arranged on the web, the muscle hole arrangement is same with the frame beam main muscle 210, the muscle hole diameter is the diameter of the frame beam main muscle 210 plus 3-5mm.

[0040] As Figure 4 The third embodiment of the utility model: the connecting device is connecting plate 1113, the connecting plate 1113 is horizontally arranged on the flange plate 111 of the section steel 110, the frame beam main muscle 210 is welded on the connecting plate 1113, and the connecting plate 1113 is used for anchoring the frame beam main muscle 210 that cannot penetrate the flange plate 111 due to insufficient anchoring length.

[0041] As Figure 2 And 4 The fourth embodiment of the utility model: the connecting device is the armpit 1112 arranged on both sides of the flange plate 111, the armpit 1112 is 200-300mm wide, the armpit 1112 is provided with reinforcing steel bars, the reinforcing steel bars are same in quantity and direction with the frame beam main muscle 210, and the armpit 1112 is used when the frame beam main muscle 210 is inserted on both sides of the flange plate 111.

[0042] In actual construction operation, the frame beam main muscle 210 is inserted into the armpit 1112 and welded with the reinforcing steel bars.

[0043] The fifth embodiment of the utility model: the connecting device is reinforcing steel bar, after the frame beam main muscle 210 is inserted into the hoop 140 of the beam column 100, the inserted end is cut off outside the flange plate 111 and is bent, the reinforcing steel bar is welded on the straight section of the hoop 140 of the frame beam main muscle 210 to the flange plate 111, and the reinforcing steel bar is used when the beam column longitudinal muscle 120 and the frame beam main muscle 210 are in position conflict.

[0044] In actual construction operation, when the beam column longitudinal muscle 120 of part of the overhead layer and the frame beam main muscle 210 are crossed and dense, the beam column longitudinal muscle 120 has no insertion space, and the anchoring of the frame beam main muscle 210 in the node area is affected, so the position of the beam column longitudinal muscle 120 can be adjusted or the beam column longitudinal muscle 120 is treated as a parallel muscle.

[0045] In actual construction operation, the beam column 100 node steel bar configuration and connecting method are as follows: the beam column 100 node adopts HRB400 III grade steel, the joint of steel bar above Φ25 in III grade steel bar is connected mechanically; the steel bars of Φ25, Φ22, Φ20, Φ18, Φ16 and Φ14 are connected by flash butt welding and electroslag pressure welding; the rest is connected by binding lap construction, and the lap is constructed according to relevant specifications and design requirements.

[0046] During actual construction, the interpenetration and avoidance relationships of the reinforcing bars are determined based on the BIM 3D model and the on-site construction conditions before the reinforcing bars are tied. The reinforcing bar tying measures are as follows:

[0047] ① When binding the reinforcing bars of the beam-column 100 node, the reinforcing bars of the beam-column 100 are bound, reserved, and embedded first. After the formwork of the frame beam 200 is erected, the reinforcing bars of the frame beam 200 are bound, reserved, and embedded then.

[0048] ② The reinforcing bars of the frame beam 200 should be placed inside the longitudinal reinforcing bars of the beam-column 100. The binding of the reinforcing bars of the beam-column 100 should be carried out before the installation of the beam-column 100 formwork.

[0049] ③ When the height of the frame beam 200 is ≥1.0m, the reinforcing bars of the frame beam 200 should preferably be tied on the bottom formwork of the frame beam 200, and the side formwork or one side formwork should be installed later.

[0050] ④ At the intersection of the reinforcing bars of the frame beam 200 and the beam-column 100, the flange plate 111 is connected by a sleeve 1111, and the web plate is perforated.

[0051] like Figure 5 As shown, at a position ≥500mm from the column edge of the beam-column 100 and ≥1 / 2 the height of the frame beam 200, an isolation mesh 220 is provided along a 45° inclined plane from the top surface of the frame beam 200 to the bottom surface of the frame beam 200. The isolation mesh 220 is a partition composed of a welded steel wire mesh and a dense wire mesh with 2-3mm mesh size. The welded steel wire mesh is formed by the steel bars being welded longitudinally and transversely inside the frame beam 200. The four sides of the wire mesh extend 100-150mm beyond the sides of the frame beam 200, and the extended part is folded over and fixed to the sides of the frame beam 200.

[0052] In actual construction, the beams and columns 100 are made of high-grade concrete poured first, while the frame beams 200 are made of low-grade concrete poured later. The isolation mesh 220 acts as a barrier between the two, preventing the mixing of concrete of different strength grades. This ensures that the high-strength concrete is not diluted by the low-strength concrete, reduces quality problems such as color difference and inconsistent density caused by uneven concrete mixing, and guarantees the stability and durability of the structure.

[0053] During actual construction, a horizontal construction joint is left at the bottom of the beam and column 100. To avoid the concrete from having laitance and the contact surface being too smooth, after the beam and column 100 is vibrated, 10-30mm diameter stone chips are sprinkled on the top surface of the beam and column 100 to enhance friction.

[0054] In actual construction, the concrete pouring method for the core area of ​​the beam-column joint 100 is as follows:

[0055] ①The beam-column 100 node construction, first pouring high-strength grade concrete, pouring low-strength grade concrete, before the initial setting of the first pouring column concrete continue to pour beam plate concrete.

[0056] ②With tower crane bucket or concrete pump delivery column concrete in place, layered vibration, leaving 45 degree slope at the floor beam plate;

[0057] ③In the initial setting of the first pouring concrete, using concrete pump, as soon as possible to pour the concrete of floor beam plate; before the initial setting of the concrete, control the high and low strength grade concrete adjacent surface can not form cold joints, at the top of the column beam bottom set construction joints, to avoid the formation of cold joints between the high and low strength grade concrete adjacent surface.

[0058] ④For the beam-column 100 node steel dense core area, to prevent concrete difficult to pour, can be used instead of fine aggregate concrete pouring;

[0059] ⑤Use small insert vibrator to strengthen the vibration, firmly prevent the dead angle of vibration, avoid the formation of honeycomb, to ensure the density and design strength of the node core area concrete.

[0060] The actual construction operation, the strength grade of the beam-column 100 node concrete is quite different, different strength grade of concrete, the cement content, water-cement ratio, water consumption are different, column volume is large, cement content is more, the hydration heat is high, the shrinkage of high and low strength grade concrete is different, cracks are easily produced near the junction, therefore, the following crack prevention measures are taken for the beam-column 100 node:

[0061] ①Adjust the mix design before construction, under the conditions of meeting the strength grade and pumpability, reduce the cement content, reduce the sand content, increase the stone content, reduce the slump, reduce the water consumption of node concrete, and the amount of fly ash and admixture also need to be adjusted accordingly.

[0062] ②Strictly control the slump of concrete mixture, the beam-column 100 concrete of node core area is transported by tower crane, in order to reduce the slump.

[0063] ③The beam-column 100 concrete is covered with ordinary plastic film, cotton felt and water conservation, so that the temperature difference between the surface and the interior of the concrete is controlled at 25℃; the conservation of the frame beam 200 concrete should be watered on the side of the frame beam 200 under the floor, before the full weight-bearing scaffold is removed, the frame beam 200 can be watered and conserved with high-pressure water gun, and the side form of the frame beam 200 is delayed.

[0064] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A beam column joint reinforcement arrangement structure comprising a beam column and a plurality of frame beams crossing the beam column from different directions, characterized by: The beam column comprises built-in section steel, the section steel comprises a cross-shaped web plate, each outer end of the web plate is connected with a flange plate, the section steel is surrounded by beam column longitudinal reinforcement in the form of a square, the beam column longitudinal reinforcement is internally provided with beam column transverse reinforcement, and the beam column transverse reinforcement is externally provided with stirrups; the frame beam comprises transversely arranged frame beam main reinforcement, and the frame beam main reinforcement is connected with the beam column through a connecting device.

2. The beam-column joint reinforcement arrangement according to claim 1, wherein: The connecting device is a sleeve, the sleeve is arranged through the flange plate, and the sleeve is arranged in the same way as the frame beam main reinforcement.

3. The beam-column joint reinforcement arrangement according to claim 2, wherein: The sleeve is internally provided with internal threads, the frame beam main reinforcement is arranged in the sleeve, and the frame beam main reinforcement is tack-welded at a contact point with the beam column transverse reinforcement.

4. The beam-column joint reinforcement arrangement according to claim 3, wherein: After the frame beam main reinforcement passes through the sleeve, the frame beam main reinforcement is bent at an angle of 90°-135°, and the bending diameter D of the frame beam main reinforcement is greater than or equal to 5 times the main reinforcement diameter d.

5. The beam-column joint reinforcement arrangement according to claim 1, wherein: The connecting device is a reinforcing bar hole, the reinforcing bar hole is arranged on the web plate, the reinforcing bar hole is arranged in the same way as the frame beam main reinforcement, and the reinforcing bar hole has a diameter of the diameter of the frame beam main reinforcement plus 3-5 mm.

6. The beam-column joint reinforcement arrangement according to claim 1, wherein: The connecting device is a connecting plate, the connecting plate is horizontally arranged on the flange plate of the section steel, and the frame beam main reinforcement is welded on the connecting plate.

7. The beam-column joint reinforcement arrangement according to claim 1, wherein: The connecting device is a haunch arranged on both sides of the flange plate, the haunch has a width of 200-300 mm, the haunch is provided with reinforcing steel bars, and the reinforcing steel bars are arranged in the same way as the frame beam main reinforcement in terms of quantity and direction.

8. The beam-column joint reinforcement arrangement according to claim 7, wherein: The frame beam main reinforcement is inserted into the haunch and welded with the reinforcing steel bars.

9. The beam-column joint reinforcement arrangement according to claim 1, wherein: The connecting device is reinforcing steel, after the frame beam main reinforcement is inserted into the stirrups of the beam column, the inserted end is cut off outside the flange plate and bent, and the reinforcing steel is welded on the flat section of the frame beam main reinforcement from the stirrups to the flange plate.

10. The beam-column joint reinforcement arrangement according to claim 1, wherein: At the position where the beam column column edge is greater than or equal to 500 mm and greater than or equal to 1 / 2 of the height of the frame beam, an isolation mesh is arranged along a 45° inclined surface from the top surface of the frame beam to the bottom surface of the frame beam.

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